User Guide

462 Chapter 3: ColdFusion Functions
Decrypt
Description
Decrypts a string that is encrypted with the Encrypt function.
Returns
String, unencrypted.
Category
Other functions, String functions
Function syntax
Decrypt(encrypted_string, seed)
See also
Duplicate, Encrypt
Parameters
Example
<!--- This example shows the use of Encrypt and Decrypt --->
<h3>Decrypt Example</h3>
<p>This function encrypts/decrypts a string. Enter a string and a key.
<cfif IsDefined("FORM.myString")>
<cfset string = FORM.myString>
<cfset key = FORM.myKey>
<cfset encrypted = encrypt(string, key)>
<cfset decrypted = decrypt(encrypted, key)>
<cfoutput>
<h4><B>The string:</B></h4> #string# <br>
<h4><B>The key:</B></h4> #key#<br>
<h4><B>Encrypted:</B></h4> #encrypted#<br>
<h4><B>Decrypted:</B></h4> #decrypted#<br>
</cfoutput>
</cfif>
<form action = "encrypt.cfm">
<p>Input your key:
<p><input type = "Text" name = "myKey" value = "foobar">
<p>Enter string to encrypt:
<p><textArea name = "myString" cols = "40" rows = "5" WRAP = "VIRTUAL">
This string will be encrypted (try typing some more)</textArea>
<input type = "Submit" value = "Encrypt my String">
</form>
Parameter Description
encrypted_string String or a variable that contains one. String to decrypt
seed String. The 32-bit key that was used to encrypt the string.